Floor scraper



J. L. HEARiNG.

FLOOR SCRAPER. APPLICATION FILED JAN-28, 1920.

Patented Apr. 4, 1922.

. anwwtoz Jamsllfleart P Sim megs UNITED STATES JAMES L. HEARING, OF COLUMBUS, OHIO.

FLOOR SGRAPER.

Specification of Letters Patent.

Patented Apr. 4;, 1922.

Application filed January 28, 1920. Serial No. 354,676.

T 0 all to ham it may concern:

Be it known that I, JAMEs L. HEARING, a citizen of the United States, residing at Columbus in the county of Franklin and State of hio, have invented a certain new and useful Improvement in Floor Scrapers, of which the following is a specification.

The present invention is an improvement upon the scraper shown and described in my patent of the United States No. 909,406, dated January 12, 1909.

The objectof the present invention is to provide means in connection with the tool holder whereby when the scraping operation I is performed the action of the tool simulates that of a tool in the human hand.

The invention is embodied in the example herein shown and described, the feature of novelty being finally claimed.

In the accompanying drawing- Figure 1 is a view in side elevation of the machine embodying the improvement.

Fig. 2 is a sectional view on the line 11-11 Fig. 1 looking down.

As in my former patent referred to G designates the main frame provided with a push handle 30, said frame being yieldingly supported at its forward portion on wheels 7, 7, and likewise supported at its rear portion by a single wheel or roller 12.

The present construction includes, as in the former patent a shank 22 in a sleeve 16 pivoted at 17 a in the frame between the front and rear wheels and a spring 29 resisting rearward movement of the shank.

In the present improvement the tool holder proper consists of a frame 20 pivoted at 21 on the shank 22. The scraping blade 18 is fixed in the lower portion of the frame 20 by a set screw 2%. The frame 20 has upward extensions carrying set screws 31 swivelly connected with the upper edge of the blade for adjusting it in the holder. A spring 32 between the shank and the tool holder yieldingly holds the tool holder in proper position with reference to the shank. The lower end of the tool holder is equipped with a shoe 33 pivoted to the holder at 34 to limit the depth of the cut. The plate at 35 is merely a wear plate held upon the main frame by bolts like that at 36 and suitable clamping nuts.

In operation, therefore, the blade upon the application of pressure to the main frame, as in the forward movement, is capable of yielding upon both the pivots 21 and 17", the action of the tool simulating to a considerable degree that of a tool in the human hand. In the retrograde movement of the machine the blade is lifted off the floor by the springs of the wheels. Because the shoe 33 is pivoted to the blade holder its lower face parallelly hugs the floor notwithstanding variations in the inclination of the blade during the scraping operation.

The forms of the parts can be changed 2 without departing from the gist of the invention as claimed.

What I claim is:

1. In a floor scraper, the combination with a main frame, and forward and rear supporting means for the same, of a shank pivoted in the frame, a spring for yieldingly holding-said shank in position with reference to said frame, a scraping tool holder comprising a frame pivoted to the said shank and a spring for yieldingly holding the tool holder in proper position with reference to said shank, means for adjusting the tool on said last named frame and a shoe loosely pivoted on the tool holding frame to limit the depth of the cut of the tool.

2. In a floor scraper, the combination with the main frame, and forward and rear supporting means for the same, of means for holding the scraping tool comprising a shank pivoted to the frame, a tool holder proper pivoted to the shank, a spring for yieldingly holding the shank in position with reference to the main frame, and a spring for yieldingly holding the tool holder proper in position with reference to the shank.

JAMES L. HEARING. 

